Jason Ferruggia takes a great look at several effective methods of training for combat athletes. As he states in the article :
neither wrestling nor any form of mixed martial arts are aerobic sports. Therefore, aerobic training of any kind is a complete waste of your time.
and
During these two to five minute bouts you'll find yourself squatting, pressing, pulling, lunging, twisting, and bridging. You'll make explosive movements, slow grinding strength-based movements, and you'll hold isometric contractions a lot longer than you can comfortably stand.
As you can see, Ferrugia strays from the usual path yet again. A good read.